The Article 78 statute of limitations is four months, running from the date the government decision you want to challenge becomes final and binding on you. That default comes from CPLR 217(1). Several categories of cases — most notably local zoning and land use decisions — carry much shorter windows, and courts enforce every one of these deadlines strictly. A petition filed a day late is dismissed regardless of its merits.1New York State Senate. New York Civil Practice Law and Rules 217
The Four-Month Default Under CPLR 217
CPLR 217(1) gives you four months to bring an Article 78 proceeding against a New York state or local agency or official. The period runs from the date the determination becomes “final and binding” on the petitioner, or from the date the body or officer refuses a demand that it perform a duty it owes you.1New York State Senate. New York Civil Practice Law and Rules 217
Four months is short by civil litigation standards, and courts treat the deadline as jurisdictional. There is no general good-cause exception. A judge cannot extend it because you were unaware of the rule, because you were still negotiating with the agency, or because the underlying decision looks clearly wrong on the merits.
The same four-month period applies to claims that a public-sector union breached its duty of fair representation. For those claims, the clock runs from when you knew or should have known of the breach, or from when you suffered actual harm, whichever is later.1New York State Senate. New York Civil Practice Law and Rules 217
CPLR 217(1) opens with an important caveat: “unless a shorter time is provided in the law authorizing the proceeding.” Several statutes do exactly that, so the four-month figure is a ceiling you cannot assume applies to your case without checking.
When the Clock Starts Running
Figuring out the filing deadline really means figuring out when the decision became final and binding. New York courts apply a two-part test. First, the agency must have reached a definitive position that causes you actual, concrete harm. Second, no further steps within the agency could prevent or meaningfully reduce that harm.2CaseMine. Best Payphones, Inc. v Department of Information Technology and Telecommunications of the City of New York Both have to be satisfied before the four months begins.
In practice the start date usually turns on when you received notice. Where the agency mails a written decision, the date the letter arrives (or is deemed received) typically starts the clock. A 2025 Court of Appeals decision confirmed that where a petitioner was orally informed of a determination, the limitations period ran from that notification date rather than from any later written confirmation.3New York State Court of Appeals. Matter of Dourdounas v City of New York When the agency communicates informally before issuing a formal written determination, courts look at when the petitioner knew or should have known the decision was definitive.
Exhaustion of Administrative Remedies
If the agency’s rules provide a mandatory internal appeal, you generally have to go through it before filing in court. You cannot bring an Article 78 challenge until administrative remedies are exhausted, but once you reach that point you must act within four months or lose the right entirely.4Justia. Walton v New York State Department of Correctional Services A voluntary internal appeal that the agency’s rules do not require will not necessarily pause the clock. Whether an internal process is mandatory or optional varies by agency, so checking the specific rules before deciding whether to appeal internally or file in court is essential.
Ambiguous or Preliminary Decisions
Not every government action arrives with a clear “final decision” label. Preliminary rulings, conditional approvals, and informal communications can create real confusion. Courts resolve this by asking whether the agency has locked in a position that inflicts harm you cannot undo through further agency proceedings. If the answer is yes, the clock has started whether or not the agency called its action final.
Shorter Deadlines for Zoning and Land Use Challenges
Several New York statutes compress the filing window to 30 days for challenges to local land use and zoning decisions. These are among the most commonly missed Article 78 deadlines because people assume the four-month default always applies.
For a town zoning board of appeals decision, you have 30 days after the board files its decision with the town clerk.5New York State Senate. New York Town Law 267-C Village zoning board decisions carry the same 30-day window, measured from when the board files with the village clerk.6New York State Senate. New York Village Law 7-712-C The General City Law imposes a comparable 30-day deadline for city-level zoning decisions, and additional shortened deadlines apply under the Town Law, Village Law, and General City Law for challenges to planning board approvals involving special use permits, site plans, and subdivisions.
The critical point: the 30-day period runs from the date the board files its decision with the municipal clerk, not from the date you personally learn of it. If you are waiting on a letter in the mail and the board already filed two weeks ago, half your window is gone.
Extensions for Minors and Incapacitated Petitioners
CPLR 217(1) provides a limited extension for petitioners who were under a legal disability when the decision became final. If you were younger than 18 or legally incapacitated at that time, you can seek court permission to file within two years instead of four months.1New York State Senate. New York Civil Practice Law and Rules 217 This is not automatic; it requires leave of court.
The mechanics come from CPLR 208. For limitations periods under three years, which covers the four-month Article 78 rule, the time is extended by the length of the disability.7New York State Senate. New York Civil Practice Law and Rules 208 A parent or guardian acting on a child’s behalf does not cut off the child’s own tolling protection, because the child remains the real party in interest.
Outside of disability tolling, the only other recognized extensions involve situations where the agency’s own fraud or concealment prevented timely filing. There is no everyday equitable escape hatch.
Filing Alone Does Not Stop the Clock: The 15-Day Service Rule
Meeting the statute of limitations also means getting the respondent served. For proceedings subject to a statute of limitations of four months or less, service has to be completed no later than 15 days after the limitations period expires.8New York State Senate. New York Civil Practice Law and Rules 306-B That is a much tighter window than the 120-day service period that applies to ordinary civil actions.
When the challenge targets a state agency or state official, the Attorney General’s office must also be served. Service is made by delivering the notice of petition or order to show cause to an assistant attorney general in the county where the proceeding is venued, or at the nearest AG office if there is none in that county.9New York State Senate. New York Civil Practice Law and Rules 7804 Skipping this step is a frequent and avoidable error.
What Happens if You File Late
The case gets dismissed. Courts have no discretion to hear a late Article 78 petition no matter how compelling the underlying claim. There is no good-cause exception for inadvertence, no equitable extension because the agency behaved badly on the merits, and no safety net for petitioners who thought internal negotiations were still open.
This is where most people lose their rights. They assume they have more time because the agency’s decision felt informal, because they were still corresponding with staff, or because they filed an internal complaint that has not been resolved. None of those situations reliably pauses the clock unless the agency’s rules make the internal process mandatory. If there is any doubt, the safer course is to file the Article 78 petition within the deadline and pursue any internal process in parallel, or to consult an attorney who handles administrative law well before the four months — or 30 days in the zoning context — runs out.